Home / 3,677.28-5,515.20-1,080

Finding the Fourth Proportional to 3,677.28, 5,515.20 and 1,080

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Solution

The fourth proportional to 3,677.28, 5,515.20 and 1,080 is: 1,619.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,677.28 : 5,515.20 = 1,080 : x
  2. Step 2: Convert to fraction form
    3,677.28/5,515.20 = 1,080/x
  3. Step 3: Cross multiply
    3,677.28x = 5,515.20 × 1,080
  4. Step 4: Simplify right side
    3,677.28x = 5,956,416
  5. Step 5: Solve for x
    x = 5,956,416/3,677.28
  6. Step 6: Final answer
    x = 1,619.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.